Cita APA (7th ed.)

Koffman, E. B., & Friedman, F. L. (1990). Problem solving and structured programming in FORTRAN 77 (4th ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Koffman, Elliot B., i Frank L. Friedman. Problem Solving and Structured Programming in FORTRAN 77. 4th ed. Reading, Mass: Addison-Wesley, 1990.

Cita MLA (9th ed.)

Koffman, Elliot B., i Frank L. Friedman. Problem Solving and Structured Programming in FORTRAN 77. 4th ed. Addison-Wesley, 1990.